Not Exactly a LOL Moment
The older we get, the more we realize that infidelity is commonplace, even among married couples. There are married men and women who can have separate families across town or in another state! It’s not something that they put in movies anymore; it’s in the real world!
Hearing about such cases is one thing, but learning that your dad is a serial cheater is another. Somehow, the OP discovered that their father had multiple affairs and ended their statement with a “LOL.” We know why they were laughing out loud. Because they used this as ammunition to blackmail dad and get whatever they wanted. Good going, OP.